Sofa



FIG. 1 is a front elevational view of a sofa according to an embodimentof the invention.

FIG. 2 is a side elevational view of a sofa according to an embodimentof the invention.

FIG. 3 is a top plan view of a sofa according to an embodiment of theinvention; and,

FIG. 4 is a perspective view of a sofa according to an embodiment of theinvention.

We claim the ornamental design for sofa, as shown.